MD5普通加密方法（這種方法一般不做為使用者密碼的加密）
| <%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
//擷取要加密的欄位，並轉化為Byte[]數組
byte[] data = System.Text.Encoding.Unicode.GetBytes(source.Text.ToCharArray());
//建立Data Encryption Service
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
//加密Byte[]數組
byte[] result = md5.ComputeHash(data);
//將加密後的數組轉化為欄位
string sResult = System.Text.Encoding.Unicode.GetString(result);
//顯示出來
pass_1.Text = sResult.ToString() ;
}
</script> <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>MD5加密 www.itstudy.cn</title>
</head>
<body>
<form id="form1" runat="server">
MD5普通加密：<asp:label id="pass_1" runat="server"></asp:label> <br />
<asp:textbox ID="source" runat="server" Text="test" AutoPostBack="true" />
（斷行符號）
</form>
</body>
</html> |
MD5密碼加密（這是常用的方法）
頁面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server" TextMode="Password"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="MD5加密" onclick="Button1_Click" />
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</div>
</form>
</body>
</html> |
後台代碼：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Computer c = new Computer();
}
protected void Button1_Click(object sender, EventArgs e)
{
//作為密碼方式加密
string EnPswdStr = md5(TextBox1.Text,16);
//顯示出來
TextBox2.Text = EnPswdStr;
} public string md5(string str, int code) //code 16 或 32
{
if (code == 16) //16位MD5加密（取32位加密的9~25字元）
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5").ToLower().Substring(8, 16);
} if (code == 32) //32位加密
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5").ToLower();
} return "00000000000000000000000000000000";
}
} |
註：除了採用單一的加密方法，還可以使用多個加密方法，取多個加密後的某幾位組成一個新的加密結果。
